Oxygen transport in the body

· 97% of oxygen carried with Hb from lungs to tissues

· remaining 3% dissolved in plasma

· oxygen reversibly combines with Hb maximum amount of O2 that can combine with the Hb of blood:

Oxygen is breathed in through the lungs and diffuses into the circulatory system where it is transported 98.5% via the haemoglobin molecule (reb blood cells), and 1.5% in the plasma (solution), which contributes to the partial pressure of oxygen in the body. When oxygen reaches its destination (cells) it is released.

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